Measures against Spam Mails

What are Spam Mails?

All unsolicited  e-mail is called "spam". Most likely this e-mail is characterized by:

  • a huge amount of target addresses
  • invalid sender addresses
  • advertising or pornographic content

Unfortunately because of missing or wrong initiator addresses you are most likely not able to sue the initiator. If you can identify the initiator you may sue him based on the "Act Against Unfair Practice" (§7 UwG). There are a few precedences but the chances are very small.

How can you protect yourself against dangerous E-mails?

Central Measures

All incoming E-mails received at the HZDR are filtered and marked for viruses and spam by DFN-servers. E-mails that are infected or have a SPAM factor greater than 10 will not be delivered nd the sender will be notified. E-mails with SPAM suspicion are marked with [SPAM] in the subject. Also attachments are checked for viruses and dangerous macros at the DFN.

Description of the filtering:

On our incoming servers, we only check whether an e-mail address is known. If a sender has been incorrectly classified as SPAM, a whitelist at DFN can be maintained by the postmaster. Please send those mails to

Based on the inserted header lines you can set up filter rules in your local e-mail software (see local measurements).

Local measures

If your e-mail client offers the possibility to set up filter rules you may use these rules to sort incoming e-mail based on their spam-level attribute.

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